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Table 1
Observations used in this work.
| Date range | Instrument | Coverage | Resolv. | # of |
| [nm] | power | spectra | ||
|
|
||||
| Jan. 1999 | FEROS | 370–890 | 48 000 | 20 |
| Jun./Jul. 1999 | HEROS | 350–860 | 20 000 | 43 |
| Jan. 2000 | FEROS | 370–890 | 48 000 | 44 |
| Oct./Nov. 2001 | FEROS | 370–890 | 48 000 | 16 |
| Sep. 2002 | FEROS | 370–890 | 48 000 | 3 |
| Sep.–Dec. 2003 | HARPS | 380–690 | 115 000 | 11 |
| Jun. 2004 | UVES | 320–950 | 60 000 | 17 |
| Sep./Oct. 2004 | HARPS | 380–690 | 115 000 | 6 |
| Jan. 2006 | UVES | 380–500 | 60 000 | 60 |
| Jun.–Dec. 2006 | FEROS | 370–890 | 48 000 | 45 |
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